Objects in the image:
category: person
category: chair
category: clock
category: person
category: tennis racket
category: person
category: person
category: chair
category: person
category: person
category: clock
category: person
category: person
category: person
category: chair
category: chair
category: chair
category: person
category: chair

Guessing-game dialogue about one of the objects:
q: a person?
a: Yes
q: on the tennis court?
a: Yes